Last Updated on August 25, 2026 by Mat Diekhake

Security Overview

Backblaze B2 is a cloud‑storage platform operated by Backblaze, a publicly traded U.S. company known for transparency, reliability, and strong security practices. The service uses modern encryption, hardened infrastructure, and industry‑standard protections against unauthorized access. As an S3‑compatible storage provider, Backblaze’s security posture is designed to meet enterprise requirements.

SSL/TLS & Encryption

The Backblaze B2 domain (backblaze.com/b2/cloud-storage) uses HTTPS with a valid TLS certificate issued by a major certificate authority. The site enforces modern TLS versions, strong cipher suites, and secure session handling.

Backblaze B2 storage also supports:

  • Encryption in transit (TLS 1.2/1.3)
  • Encryption at rest
  • Optional customer‑managed encryption keys
  • Secure API key authentication
  • Private buckets and access controls

This ensures both web interactions and storage operations are protected from interception.

Hosting & Infrastructure

Backblaze operates its own physical data centers in the United States, supplemented by partner facilities. Infrastructure includes:

  • Redundant multi‑region storage
  • Enterprise‑grade load balancing
  • DDoS protection
  • Hardened physical access controls
  • S3‑compatible architecture
  • 24/7 monitoring and incident response

Backblaze is known for its transparent infrastructure reporting, including public hard‑drive reliability statistics.

Malware & Phishing Scan

Scans show:

  • No malware detected
  • No phishing flags
  • No suspicious redirects
  • No unauthorized third‑party scripts

Backblaze is not associated with malware distribution or phishing activity. The most common threat is fake Backblaze login pages used in credential‑stealing campaigns — not the real domain.

Privacy & Data Handling

Backblaze collects:

  • Account information
  • Billing data
  • Usage analytics
  • Storage metadata
  • Device and browser information

Tracking is limited to:

  • First‑party cookies
  • Standard analytics
  • Optional integrations (S3 clients, backup tools, etc.)

Backblaze does not sell user data and follows strict privacy and compliance standards.

App Permissions (If Applicable)

Backblaze’s desktop backup client may request:

  • File access (for backups)
  • Network access (for cloud uploads)
  • Notifications

Permissions match the intended functionality and are not excessive.

Breach History

Backblaze has no major public data breaches on record. The company has reported isolated service incidents historically, but none involving customer data exposure.

Backblaze’s long operating history and public transparency contribute to its strong security reputation.

Security Certifications

Backblaze maintains:

  • SOC 2 Type II compliance
  • ISO 27001 certification
  • HIPAA‑eligible infrastructure (with BAA)
  • GDPR compliance
  • Regular third‑party audits
  • Public security documentation and incident reporting

These certifications indicate a mature and well‑maintained security program.

Final Safety Verdict

Backblaze B2 is safe to use. The platform uses strong encryption, hardened U.S.‑based infrastructure, enterprise‑grade access controls, and maintains multiple certifications. No malware, phishing, or breach history suggests elevated risk. Backblaze B2 meets — and often exceeds — the security expectations of a modern cloud‑storage provider.